Sewing-machine.



P, WBVER.

y SEWING MACHINE.

APPLICATION ULEB JAN. 19, 1905.

Patented 0st. 2'?, 1908.

2 SHEETS-SHEET l.

Silvan/Joe Wihwoau @We :V/m

FRLTZ EVE i, Oli` T'l`TGAR'l`, GERMANY.

SE WING-MACHINE.

Specification of Letters Patent.

Patented Oct. 2'?, 1908,.

Application led January 19, 1905. Serial No. 241,792.

To all whom it lmay concern 5 lic it known that. l, Ylnrrz Wiivnn, a citit Zen ofthe German lhnpirc, resit'linf; at Stut't- 1 gart, in the Kingdom'of llliirtemberg. Germany. l\ave invented eert ain new and useful i Improv entsin Sewing'-Machines, of which i the following' is a description, reference being had tio the accompanying drawing, and to the letters and figures of reference marked thereon.

hly invention relates to attachments for sewingv machines, whereby said machine. is adapted for necking` underwear. 'lhat is, the knit. blank from which the shirt is to be made., is out in a predetermined outline, and one of said cnt edges stitched to the body piece.

My invention consists in an attachment whereby the material is so held and |nanipnlated that` a circular portion is rut trom the body fabric. and the. edge olI said circular portion stitched to the. body fabric by a blind stitch.

My invention consists further in details of construction which will be hereinafter set forth in the lltscription and pointed out in the claims.

ln the drawings: Figure l is a front elevation of a. fragnmntary portion 'of the machine head with my attachment secured thereto, the certain parts beine shown sew tioned; Fig. 2 is a` detail view ofmy attachment, parts being shown as sectioned; Fig. 3 is a detail view showing` the back Acuide and the clan'iping member cooperating there with in separated position, and the fabric folded over said back `raide. ltig. 4i is a plan view of the clamping' jaws, together with the. presser foot, needle and trimmers; Fig". 5 is a view of a shirt. blank, as stitched on my machine, the stitches beinpY indicated in this view merely by a dotted line; and Fig. 6 shows the manner of folding` the shirt blank and the process of stitching partially completed.

The parts of the sewing machine proper have been shown only in a lfragmeutary manner, as the machine is of the usual construction familiar to. those skilled in the art to which the invention relates. 30 is the needle, Which is supported by the usual needle bar, and has cooperating therewith the usual complemental stitch-forming meehanism, which operatcs'to form an overedge stitch. 5g-t is the usual presser foot having a shield or guide 31. is the usual feed doe', cooperatingl with the presser foot to feed the material through the' machine. the upper trimming member, and 32 is the lower trimming member. These parts are all of the usual construction, and will not be further described in detail.l 4

illy invention relates to an attachment for a machine. of the above characteristics. Secured to the machine frame I by suitable .screws is a bracket l, which has pivoted at its upper end a lever 3 by means of a pivot The lever 3 supports my werk holdingattachment. The lever extends downward, substantially parallel with the needle bar, for a short distance, and ,is then defiected outward a 'ay from said needle bar. lower end of the lever il is a bearing l0. A bearingI n spaced from the bearingI 1t), but in alinement therewith is also carried by .said lever. i\lounted in lsaid bearing 9, and projecting through `said bearing l() is a fiialt 4t. lSaid shaft carries at its lower end a jaw le. Said 'jaw consists of a plate arranged substantially at right angles to the shaft. -1l and secured thereto by a suitable screw. The outer edge of the jaw is bent at l5. so as te lie substantially parallel to the bed plate `when adjacent the needle, and in position to hold the material for the needle to penetrate. the same. The portion 15 extends beneath the presser foot, as shown in Fito'. l. so that the material when bent over said edge will be held in such a position relative. vto the needle that said needle will enter and emerge from the material on the same. face, without penetrating entirely through the material to the other face, and thus forming a blind stitch. The edge of the j aw l5 which supports theback face of the. material, I term a back guide. This back ,fluide as the material is fed, turns about the. shaft fl as an axis. The shaft 4 is capable of limited movement in the bearings 9 and 10, and is held in its elevated position by a spring l1, bearing against the bearing t), and against the collar l2, on the end of the shaft. When the presser foot is lowered, it engages the back guide 15, and moves the same with the shaft i against the tendency of the springr ll, until the material is firmly clamped againstthe bed plate of the machine. This movement of the At the parts adjusts the same for' dierent thicknesses of material operated upon.

Surrounding the shaft 4, and engaging within the bearing 10 is a sleeve 6, which is slotted at 5, and receives a pin carried by the shaft 4, so that said sleeve 6 may move longitudinally of the shaft, but partakes of the axial movements of said shaft.

A spring 7 encircles the shaft 4, and bears at-one end on the sleeve 6, and at its other .on a collar 8, secured to the shaft. rlhe normal action of the spring 7 is to force the sleeve 6 toward the jaw 14. Rigidly carried by the sleeve 6 is a jaw 13, corresponding in outline to the j aw 14. By the action of the spring, the jaws 13 and 14 are kept in contact. An arm 21 is provided with ears 19 at its'lower end, which are pivoted to a lug projecting from the bracket l, so that said arm has a horizontal movementl Extending along the upper edge of the arm is a cam ledge which engages the collar 6.

lhe arm 2l is held in operative relation to -is guided in its movements.

'lhe spring pin 17 (see Fig. 2) operates to hold the lever in its adjusted position. A screw 20 is carried by the lever 3 and bears against the bracket 1. By adjusting thel screw, the inward movement of the lever 3 controlled and the position of the back guide relative to the needle determined. For thingoods, it is necessary that the back guide be brought closer to the needle, other wise, the needle would miss entirely the material bent around the guide.

In order to insert the material, the lever 3 is moved to' its outer position. Byy this movement the' cam 18 engages the sleeve 6, and separates the jaws. The goods are folded as shown in Figs. 3 and 6, and placed over the jaw 14. The lever is then swung to its inner position and the jaw 13, through the action of the spring 7 descends upon the fold of the material, securely clamping the same to the lower jaw 14. Asl the feed of the goods takes place, the back guide is turned about the shaft 4 an axis, and the material is therefore eut and stitched in the circular outline shown in Fig. 6.

ving therewith, means'for supporting saidbaclr guide from the head of the machine, whereby'the body of the material folded ceases over said back guide, may pass underneath said guide, and meansfor moving the same in a circular direction.

2. The combination with stitch forming mechanism, a back guide over which the ma-, terial is folded, whereby the needle may, enter and emerge from the same surface of the material, means for clamping the material to said back guide, means'for support` ing said back guide from the head of the machine, and means for moving said back guide in a circular direction.

3. In. a sewing machine having an over- 4 hanging arm, the combination with stitchforming mechanism, of a back guide over which the material is folded, means for supporting said back guide from the head of the machine means for clamping the material to said back guide, means for adjusting said guide relative to the needle, and means for roving said back guide in a circular direc- `:ion; substantially as described.

4. ln a sewing machine having an overhanging arm, the combination with stitchforming mechanism, of a back guide over which the material is folded, means for supporting said back guide from the head of the machine means for yieldingly support.

6. The combination of stitch-formingv mechanism, a back guide over which the material is folded, means for yieldingly supporting said back guide from the head of the machine, whereby it may yield vertically, and means for adjusting the horizontal position of the back guide relative to the needle whereby the needle may be caused to enter more or less into the folded portionof the material; substantially as described.

7. The combination of stitch forming mechanism, a back guide, means for supporting the same, whereby it may yield vertically, means for adjusting the horizontal position of the backguide relative to the needle, and means for moving said back guide'in a circular direction.l and a clamping member coperating with said back guide and moving therewith; substantially as de-` scribed. j

8. The' combination of stitch-'forming mechanism, a back guide, means for clamping the material to said back guide, means soa,

for supporting said back guide, whereby it may yield vertically, and means for adjusting` the horizontal position of the baal; guide relative to the needle; substantially as described.

9. The combination of stitch-forming mechanism, a back guide, means 'for clampingthe inaterial to said baal: guide, mean? toi supporting said back guide, whereby vit may yield vertically, means for adjusting` the horizontal position o'l the `back lguide relative to the needle. and means for moi'- ing said back `Ljiiiile in a Circular direction; substantially :is described.

ll). The Combination of stitch-forming mechanism, a bac i guide Comprising Clan'iping jaws, means for yieldingrly supporting said jaws, means 'for mowing; said jaws about an axis, means for moving;` one jaw relative to the other and means whereby said jaws may be bodily moved away lfiomlthe stitchl'orining' xneehanism; substantially as ilesi'ribed.

ll. The cini'ibination of sliicli-fi ii1iiiig mechanism, a bai; C. f' le comprising clamping jaws, means for means for moving said jaws about an airis, means whereby said jaws may be bodily moved away from the stitch-forming mechansm, and means for separating and closing said jaws as they mowe away from and. toward the stitch-formingl mechanism; snbstantially as described.

l2. The combination with stitch forming mechanism of a worlt support, a trimmer, a movable back guide, means forsupperting said back guide above the work support, whereby a plurality of layers of material may be placed thereon, with one layer folded underneath said back guide and the other layer extending beyond said back guide into the path of the trimmer, and means for clamping said layers of material to the back guide.

ln testimony whereof aiiix my in presence of two witnesses.

Farra iiirnfaii.

signature,

Witnesses c EMIL SoHiiim'r, ERNEST ENTENMANN.

sim ortin said iaws 

